• Journal of Digital Contents Society
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• v.16 no.2
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• pp.189-196
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• 2015

The proposed cooperative 3D modelling system enables more efficient modeling works by improving current cooperation systems. Current 3D modeling tasks work on off-line and most of works are cooperation systems which communicate by files. These cooperation system cannot be interactive, occurs time delay while feedback and must have some programs which can read the files. This paper solves these problems using web that has the characteristics of network and proposes new cooperation system form. Using WebGL(Web Graphics Library) which is proposing technology in technical realization of Web 3D modeling, we make 3D objects in web browser and these objects can be manipulated by server-client communication. Therefore, if people use this system, they can use real time interaction and feedback. Also this system lowers a software installation necessity and can access everytime if web browser is installed.

• Smart Media Journal
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• v.10 no.4
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• pp.9-14
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• 2021

In the case of the existing remote collaboration, the remote support service-oriented system is not suitable for the use of the field-oriented multi-person remote collaboration system. This paper is a remote collaboration system development for various industrial sites. We develop remote support and work management that faces the various needs of industrial sites, real-time video remote support between workers, and real-time voice work sharing between workers. In addition, The goal of the development aims to increase the usability by strengthening the security function through encryption in the video and to develop a more efficient system. Finally, the development contents are the remote management and the support software development, Android app development for worker, WebRTC-based remote collaboration system construction and development, and prototype development. These products are expected to increase demand and increase sales by installing and operating at industrial sites, and can promote manpower training, understanding trending technologies, and improving capabilities.

• The Journal of the Convergence on Culture Technology
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• v.8 no.5
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• pp.663-668
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• 2022

As the number of people who experience sleep disorders is increasily growing, users' desire to improve their sleep quality has also increased. Acoordingly, the 'Sleeptech' market is showing a steady growth. This study designs and proposes a system after consideration of existing related research that can help modern people overcome sleep disorders, which is based on the necessity for customized sleep hygien service. This system analyzes user's sleep data collected through smartphone built-in sensors to calculate sleep patterns, provides customized sleep hygiene-based solutions to users through collaborative filtering, and provides an environment suitable for sleep through the automatic control of IoT devices. This method of using sleep data is expected to contribute to the improvement of the quality of life of modern people suffering from sleep disorders, which results from expansion to Sleeptech market as well as improvement of users' sleep habits.

• Proceedings of the Korea Information Processing Society Conference
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• 2011.11a
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• pp.151-154
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• 2011

유비쿼터스 협업 (Ubiquitous Collaboration)은 유비쿼터스 환경에서 다양한 이기종 디바이스 (PC, Tablet PC, Smart Phone, etc)들이 유무선망을 통해 언제 어디서나 원하는 서비스를 주고 받을 수 있는 시스템으로 시간과 장소에 상관없이 다양한 데이터를 주고 받을 수 있다. 스마트폰의 보편화, 하드웨어 / 소프트웨어 그리고 무선망의 진화로 협업의 중요성은 점점 증가하고 있다. 본 연구에서는 스마트폰 환경에서 이미지, 도형, 텍스트 등의 도구를 사용 협업하는 인터랙티브 화이트보드 어플리케이션(Interactive Whiteboard Application on Smart Phone)을 사용하여 다양한 환경의 사용자들이 서로 다른 이기종 디바이스와 함께 통신하는 방법을 보인다. 또한 서로 다른 이기종 디바이스 간 그룹 통신에서 오는 동기화(Synchronization), 비동기화(Asynchronization), 또한 다른 화면 크기로 부터 발생되는 서로 다른 이미지 크기 표현문제를 극복하기 위한 사용성 평가실험(Usability Test)을 통하여 연구의 타당성 및 우수성을 증명해 보이고자 한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2019.05a
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• pp.314-315
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• 2019

소프트웨어 개발은 협업이 가장 중요시 되는 분야 중 하나로 팀 단위의 소프트웨어 개발의 품질 및 생산성 향상을 위해 팀 단위 프로젝트 방법론이 발달하였다. 방법론의 선택에 따라 개발의 결과물과 만족도에 큰 차이가 나타나게 되는데, 고전적인 폭포수(Waterfall) 방식의 대안인 애자일(Agile) 방법론은 점진적인 개발로 프로젝트 진행도중 발생하는 이슈처리를 효율적으로 해결할 수 있어 현재 많은 개발에 적용되고 있다. 그 중 스프린트 기법을 바탕에 두는 스크럼(Scrum)을 사용하는데 소규모 개발팀은 스크럼(Scurm)의 교육 부담과 스크럼 마스터의 부재로 해당 방법론을 적용하기 어려움을 겪는다. 이에 본 논문에서는 소프트웨어 공학의 애자일(Agile) 방법론 중 하나인 스크럼(Scrum)을 실제 프로젝트 관리 시스템의 도구로 사용하기 위해 웹 응용 시스템으로 구현하고자 하며 해당 서비스가 SW개발뿐 만 아닌 다양한 분야의 프로젝트에 적용될 수 있도록 한다. Spring 프레임워크를 이용하여 서버를 구축하고 AWS EC2를 통해 배포하며, BootStrap과 JQuery를 이용하여 웹을 구성하여 팀 프로젝트에 있어 효율적인 관리 도구가 될 수 있도록 한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2013.05a
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• pp.1100-1102
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• 2013

현대사회에서는 외모가 내 외적으로 자신을 나타내는 지표이자 상징이며, 사회적 위치나 경제적 상황, 자아정체성을 대변할 수 있다. 또한 경제능력이 향상되고 기존의 성역할 개념의 약화, 사회진출과 인간관계 유지를 위해 남성들도 외모관리에 대한 관심이 높아지기 시작했다. 본 논문은 비교적 화장품에 대한 정보를 잘 알지 못하는 남성들을 대상으로 웹에서 사용자의 나이, 피부톤, 피부타입에 알맞은 화장품을 추천해주는 시스템을 소개한다.

• The Journal of the Convergence on Culture Technology
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• v.4 no.1
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• pp.187-192
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• 2018

Mind map is a very useful technique for brainstorming. Therefore, it can be effectively used for collaboration as a creative group conception. However, existing mind map software is not possible to collaborate because it is difficult to share mind map or discuss among members. In this study, we developed a mind map system that can support collaborative work as well as individual authoring and editing. This can incorporate individual mind maps of members into mind map of team, share and discuss them, and modify the mind map. This is convenient because it does not require a separate program installation, and verifies usability to support the process of collaborative process through usability evaluation.

• KIPS Transactions on Software and Data Engineering
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• v.10 no.8
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• pp.287-300
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• 2021

Collaborative Cyber-Physical Systems (CCPS) are those systems that contain tightly coupled physical and cyber components, massively interconnected subsystems, and collaborate to achieve a common goal. The safety of a single Cyber-Physical System (CPS) can be achieved by following the safety standards such as ISO 26262 and IEC 61508 or by applying hazard analysis techniques. However, due to the complex, highly interconnected, heterogeneous, and collaborative nature of CCPS, a fault in one CPS's components can trigger many other faults in other collaborating CPSs. Therefore, a safety assurance technique based on fault criticality analysis would require to ensure safety in CCPS. This paper presents a Fault Criticality Matrix (FCM) implemented in our tool called CPSTracer, which contains several data such as identified fault, fault criticality, safety guard, etc. The proposed FCM is based on composite hazard analysis and content-based relationships among the hazard analysis artifacts, and ensures that the safety guard controls the identified faults at design time; thus, we can effectively manage and control the fault at the design phase to ensure the safe development of CPSs. To justify our approach, we introduce a case study on the Platooning system (a collaborative CPS). We perform the criticality analysis of the Platooning system using FCM in our developed tool. After the detailed fault criticality analysis, we investigate the results to check the appropriateness and effectiveness with two research questions. Also, by performing simulation for the Platooning, we showed that the rate of collision of the Platooning system without using FCM was quite high as compared to the rate of collisions of the system after analyzing the fault criticality using FCM.

• Journal of the Korea Society of Computer and Information
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• v.19 no.9
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• pp.93-101
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• 2014

Movie stories can be retrieved efficiently by analyzing a script, which is a blueprint of the movie. Although the movie script is described in the formatted structure of Final Draft, it is hard to restore the type without analyzing the story of the sentences since the scripts open on the website are mostly broken. For this purpose, it is necessary to develop and provide the web-based script analysis software so that users collaboratively and freely check and correct the errors in the results after automatically parsing the script. Hence, in this paper we suggest the structure of the web-based collaborative script analysis platform that enables users to modify and filter the type error of the script for high level of film data accumulation and performance evaluation for the implementation results is conducted. Through the experiment, accuracy of automatically parsing appears to be 64.95% and performance of modification by collaboration showed 99.58% of accuracy of parsing with errors mostly corrected after passing through 5 steps of modification.

• Journal of the Institute of Electronics Engineers of Korea CI
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• v.45 no.3
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• pp.86-96
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• 2008

In ubiquitous environments, invisible devices and software are connected to one another to provide convenient services to users. In order to provide such services, we must have mobile devices that connect users and services. However, the types of available services have thus far been limited due to the limited resources of mobile devices. This paper proposes a solution to the resource limitation problem of mobile devices by presenting a context-based collaboration system that allows mobile devices to share various nearby resources. Our system has a feature to enable personalized resource sharing by dynamically re-configuring user's preference and resource information.